1990 VRP Mugen 125 - rebuilt

luckynino
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3/25/2018 12:15am Edited Date/Time 3/25/2018 5:00am
I will only say this much: there's not much guys selling such parts let alone swingarms for every year... But as we can see you run the risk of having a rather expensive Banana holding your rear wheel. I wouldn't mount those parts unless you put the bikes in a museum and don't actually ride them.

On a sidenote: it's not just fake VRP parts but that seller is also "cheating" on other parts as well. I am specialist on Mugen and VRP and cought him multiple times offering parts that weren't what he said they were...in the end he blocked me from being able to comment on his Facebook page where he often shows parts he has for sale....i often let people know that the shown parts weren't the real deal so obviously he wanted to get rid of the guy hindering him to sell his parts for good money. I was also threatened on the phone and by mail so there's the reason i won't name him anymore but i think by now everyone understood who he is anyway Wink

He has some nice parts too....but when i see a person doing fishy deals the way he does....it just makes him a seller to avoid.

a22
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3/25/2018 7:35am
Bearuno wrote:
[b]quiknik[/b], heed what Luckynino has written. The CR swingarm absolutely is Not a VRP. It's got the original cast front section, and I recognise standard chain...
quiknik, heed what Luckynino has written. The CR swingarm absolutely is Not a VRP. It's got the original cast front section, and I recognise standard chain guide mounts and the caliper carrier mount. They've just been cut off the original swingarm, and welded onto the pressed halve arms they've made. It's easy to do - in the process of making my PDS rear end for my 500 I removed them to transfer them to opposite sides, as I ran the swingarm upside down for my adjustable PDS mount to be placed in the Rocker recess.

I don't know enough about Suzuki one pictured to offer an informed opinion.

I really hope you've got a Bormi Parts swingarm, or at least a Properly made one, and Not one of the 'unnameable' ones that Luckynino put a picture up of.

If you look up Bormi Parts, and search through their pictures, you'll see they've done a variety of 'Coke Bottle' CR swingarms. Ones with fabricated front sections, ones with the full std cast front sections, ones with the cast std section, but with machined swingarm bearing housings, ones with cast front sections, but with a weld across them to emulate some works swingarms.

But, your 'seller' is Bull Shitting you on the CR one being a VRP. I Hate Bull Shitting / dishonest sellers - I've been ripped off a few times, and it's made me very, very cynical and untrusting.
quiknic wrote:
Bearuno - I knew it was trouble as soon as I received them and opened the boxes as they did not match the pictures on their...
Bearuno - I knew it was trouble as soon as I received them and opened the boxes as they did not match the pictures on their website 100% but i was hoping that I was wrong... I spent $2700 on a large order of parts with these F#!K3RS and as they are located in Italy and I am in the USA it makes it pretty difficult to run on over and break some limbs to get my money back. I gave them an opportunity to return my money and I would have shipped back the swingarms but again they refuse and swear through their teeth that I had received VRP parts. They did however say that they would offer a 5 year warranty which judging by their previous lies I would not hold much faith in.

These swing arms were definitely made by the same person, like Luckynino said there is no oxidation or signs of wear and age on them, they also delayed getting them shipped for sometime and were probably making them after I sent the bank transfer since they would not do PayPal. So much for buying a VRP swingarm for my CR250 and a Factory Suzuki swingarm for my RM125 as like you I am very cynical and untrusting of folks now. Good money gone up in flames, but hey at least the small parts that I bought turned out to be real.

Steer clear of MASTERCROSS in ITALY unless you too like burning your hard earned cash!
Kind of sad and shocked hear this story.
Surely you must have some sort of 'Consumer Rights'- rather than having to suck it up?

Ok, so you did not pay with Paypal etc which you may have been able to get refunded from, as many seem to.
However, I would just think the fact you are NOT HAPPY, gives you a consumer right to return the goods and be refunded? Let alone the fact that they are probably not safe, or fit for purpose as well as being sold as something they are not, i.e VRP!
I am not totally sure of the law/ or in Europe etc but think here in UK, we can return stuff within a given period, even if not faulty- it is a 'Consumer Right' and for a good reason often, as a way to protect Consumers from what can go on!

I would look into it- surely you have some sort of legal right to return these goods, especially as they are possibly unsafe and not fit for purpose. As said you may find you even the right to return them anyway without even giving a reason! I would try to look into it if I were you, as the situation seems totally unacceptable.
a22
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3/25/2018 7:40am Edited Date/Time 3/25/2018 8:09am
As Bearuno said also, if you could get an expert to test them for integrety/ correct annealing/ quenching/ Tensile strength etc, and if possible state their findings in writing, then I would think that too would give you a right to return them as 'not being fit for purpose', if they are found to be badly made.
Surely you must have some rights to return these in oneway or another?

I think also a buyer has better rights if you pay for something with a Bank Card(Credit/ Debit not sure), as have heard you can claim back of them in the event of problems. Not totally sure though, just stuff I remember briefly coming across.

...Sort of similar story, got a friend who bought a really fancy expensive coffee machine from Italy, it arrived all busted up and was clearly damaged before transit.... basically the company sent her a busted machine and they knew it. They refused refund and told her 'she could fix it anyway and would have a cheap machine!' The thing was mullered..... Luckily she paid by a Bank Card I think, (not sure of what type of card) but she was able to claim the £700 back from the Bank Card.

The Shop

a22
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3/26/2018 9:52am Edited Date/Time 3/26/2018 10:12am
luckynino wrote:
You might look into this as far as your rights to return goods are concerned: https://europa.eu/youreurope/citizens/consumers/shopping/guarantees-returns/index_en.htm To me it seems within 14 days you are able...
You might look into this as far as your rights to return goods are concerned:
https://europa.eu/youreurope/citizens/consumers/shopping/guarantees-ret…

To me it seems within 14 days you are able to send back without even mentioning a reason!
That's good info Nino, sort of what I thought I had read before and kind of remembered. It seems a consumer/buyer may have more rights than one would think, i.e being able to return withiin 14days (without a reason even) etc.
Good information for any future buyers with this type of nasty predicament.

Possibly it maybe too late for the buyer to take this above right, (if received more than 14 days ago) BUT would still think he may have the right to return as it may not be as described, i.e, a genuine VRP(as was sold as), not fit for purpose and in the event of failure, possibly dangerous even.

It's not on really in my eyes and suspect the unfortunate buyer did not intend to spend loads of money for a fake product (as it appears maybe the case by former posts), or worse still a product that may injure him!
luckynino
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3/29/2018 12:55pm Edited Date/Time 3/29/2018 1:55pm
The 2018 italian vintage championships starts soon so i took my 89 bikes out as they were unused since last summer.
It was actually the first time i had my "standard" bikes facing each other same day, same track. My racebike with the aluminium VRP gas tank is a proven performer and really superfast. It was the second bike with the Mugen engine which needed to be set up as i haven't ridden it with those Mugen forks yet.

Since in Switzerland we still have very misty conditions and sometimes still freezing temperatures we have no place to ride still. So i obviously had to travel south to Italy where you have several practice tracks to choose from.

First roll-out with my 89 bikes:











There was some suspension testing going on. You get strange looks when you do such on vintage iron Wink



Adding oil to fight bottoming





Once back home and all cleaned up i discovered a broken front rim...a well known issue with those old stock rims:



I was lucky i already had a new Excel rim around so i just swapped rims out and within a day i was ready to go again





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luckynino
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5/24/2018 10:23pm Edited Date/Time 5/25/2018 1:31am
Meanwhile the italian vintage championship is in full swing!

I did the first round which was held at former GP track MALPENSA near Milan which is just across the highway of the Airport. With 3 hours from Zurich/Switzerland this is the closest race for me.

I was in great shape physically as i lost almost 10 Kilos / 22 lbs over the winter. The last summer i had some mishaps and injuries, which prohibited me from doing anything. I had to take heavy painkillers for months and in November had my shoulder operated (they removed a torn biceps muscle)....so i was not riding until January. That's the pictures i posted above. Then we had a pretty heavy winter in Switzerland and riding was basically not possible. So all i did was riding my mountainbike but at least 5 times a week!



So the only thing i knew was that my bikes were all prepped and ready, my fitness was there, but i had no idea where i would find myself in the races. Then the bad news: it rained all week prior to the race and some pictures from local guys showed the track basically under water. But for the weekend the sun came out and the track was prepped to the max. So this is what we encountered:

Malpensa/Italy with its famous uphills and downhills:


The soil turned out to be just awesome


In the end got a 3. in moto one which boosted my confidence. In the second moto i got another holeshot:


Later in the race i got passed and was again sitting in 3rd when just 300m from the finish my engine blew up! Out of thew blue it quit and i was left pushing my bike back to the pits. So instead of a 3./3. which would have been a 2nd overall i had only a 3./0. Sad

Anyway - big confidence boost, a great race, fitness was there as was my speed. A super nice track to race on...a fun day all around IF i just could have brought home my bike in one piece.

Instead - this is what i found when i took the cylinder off:




Searching the rod....


...found it Wink As you can see it was a Prox which i usually would never run. But it was in there when i bought the bike and during the initial rebuild i left it as it seemed to run still ok. Well - that lasted only 12 hours,


What i couldn't believe is that in all that mess the cylinder and head had no damage at all! Not even the slightest scratch. The lower cases just one little nick. So all i need to do is put a new crank and piston....but 89 cranks are no more available. So most would fit the newer crank of the later HPP engines but this would also require a different ignition as the shape of the cone would not allow you to mount the 89 flywheel. Since my engine was superfast i wanted to have it again as it was which is with the stock 89 ignition. So i sent a different, old and used spare '89 crank off to my german tuner Tisberger who is a old-school technician and a master in doing precise work. He put a Wössner rod and it got balanced since weights would not be the same as the stock rod. By just installing the rod you would have a really bad weight distribution and a off-balance crank.



There's some tungsten weights installed to balance out the crank




I then let go the 2nd and 3rd round of the italian championships as those were at the very south of Italy. I'm not driving 1500km for a race anymore Wink

This gave me some more time to rebuild my bike...















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Jrewing
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5/25/2018 3:46am
Awesome I love your bikes and stories. I have learnt many things, especially for my 99 125.
a22
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5/26/2018 8:14am
That is really amazing that the cylinder and head had no damage- and also lucky! Maybe your 'LuckyNino' name is true!

Yes, great pics and info- I so wish I had kept my race bikes from 1980- 1985, as well as some of the trick parts- I bet alot of us old riders did!
luckynino
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8/25/2018 5:36am Edited Date/Time 8/25/2018 5:38am
Latest update...here's a walk-around video of my VRP Mugen 125 as it stands this week (August 2018):








8/26/2018 2:40pm
I always wanted to try riding the Malpensa course. I can always see the track flowing up and down the steep hills right from the main highway going to and from the airport.
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luckynino
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8/27/2018 5:32am Edited Date/Time 8/27/2018 5:33am
Some picture as well:





luckynino
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8/27/2018 5:37am
Remember: all 1989 !

Italian custom VRP (Verona Racing Parts) aluminium chassis, swingarm, subframe-airbox combo with much larger volume, gas tank with air tunnels that funnel air directly into the large airbox

1989 Mugen kitted engine
1989 Mugen upsidedown forks
1989 ugen rear shock

I raced this bike back in the day in the swiss Inter championships and later on was also eligible o participate in GPs.




luckynino
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8/27/2018 5:40am
1989 Mugen equipped engine....still plenty fast even by todays standards!


luckynino
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8/28/2018 3:52am Edited Date/Time 8/28/2018 3:53am
I have best results with a 38mm Keihin PJ. Huge improvement over the stock 34mm ! I combine it with Mototassinari Vforce3 reedblock and also added this spacer to the ATAC chamber for better low-end. I tried a 38mm PWK Air Striker but it's no better, i even think it looses a bit on top. For me the old PJs work best.





What is also important is to mount a good exhaust. On the VRP i actually mount the stock exhaust where i just got rid of the black colour. I don't ride the VRP bike anymore so it doesn't need the best exhaust...BUT on my two other bikes i use for vintage racing i use italian Messico exhausts which mage a HUGE difference in power. The stock exhaust feels like having a rag in the airbox. Same with the often seen Pro Circuit exhaust which is one of the weakest i have ever tried. I bought one too thinking it must be a good one...oh boy was i wrong. After 3 laps i took it off as i really thought i blew up my engine. No power at all. Just empty revs. Ever since the PC is collecting dust in a corner of my garage...When you install the Messico pipe the engine comes to live. It literally rips! Big, big difference!!!








luckynino
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8/28/2018 3:58am Edited Date/Time 8/28/2018 4:00am
As mentioned above me too i bought a Pro Circuit thinking it must be a great exhaust...well - not soo! Big disappointment. I really did just 3 laps and switched back to the italian Messico instead...oh boy-what a difference! The PC felt like riding a 80cc bike. True story.



Ever since the PC is just part of my exhaust collection...meanwhile i'm at 21 exhausts for my 5 125cc Hondas...Wink
By the way - the PC is one of the weakest exhausts on my HPP engines as well. You can see a HPP PC exhaust in my collection as well...i won't ever use it again.


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Jrewing
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8/28/2018 4:49am Edited Date/Time 8/28/2018 4:50am
I have read that you also used Tomasin pipe? I’m looking for a pipe for my 99 and I follow Tomasin racing and was going to contact him. Do you have feedback for them?
Same I use a pj38 too.
luckynino
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8/28/2018 5:59am Edited Date/Time 8/28/2018 11:50pm
Yes - on my HPP engines i actually prefer the Tomasin R&D exhaust as it revs a little further up than the Messico. I just like that extra overrev paired to that insane pull up the very top it offers.

Next in line would be the Messico which is a great allrounder. Awesome mid-top. It just misses some extra rpms on top of the Tomasin.

However, while Messico exhausts fit like a glove the Tomasin needed to be cut&weld! Both-on my AF build as well as on the 98! Not what you are looking for when spending serious cash on a nice exhaust.

Here's a short summary of some exhausts i tried on my Mugen equipped HPP engines:

Tomasin R&D:
Decent low-end, comes on strong in the middle and will rev higher than any other exhaust while still pulling with authority ( my impression is that it revs like 500-1000 rpms higher) . It really has a super-strong top-end. BUT it doesn't fit well.
Tomasin on my '98 after some serious cutting/welding we got it fitted:

On the Tomasin we had to cut the tailpipe and then instead fitted the tailpipe of a crushed, old Messico exhaust i still had around...



Messico:
Good low-end, comes on very strong in the middle and revs pretty far making really good power. Fits great

FMF Fatty:
Really good as well, just not as impressive as the Messico. I really dislike the Nikkel plating. I don't like the disco-look at all. It's also heavier than the italian exhausts (thicker material?)

HGS:
good low-end, comes on strong in the middle but then signs off on top . Doesn't like to be revved! It hits a wall and signs off. Requests more shifts than other exhausts. Very similar to the Messico but won't rev up top.

Pro Circuit:
weak low-end, no torque elsewhere, revs out higher than stock but there is just no "meat" in the powerband. Needs a lot of clutch. Feals really weak when compared to the italian exhausts.

DEP:
I tried it a couple of years ago but it felt weak everywhere. Similar to the PC without offering the added revs up top.

Tomasin R&D exhaust on my AF build


Tomasin just fitted to my AF build. Obviously on such a build some angles might vary so i could accept that we had to adapt it here....but not so on the stock '98 bike above. It is really a pain to have them fitted but they perform so good that i was still willing to do it.


Such coned pipes just have a distinct look Wink









1
JMX247
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8/28/2018 6:35am
Was the fork tube anodized red at the bottom or is that an anodized collar.

luckynino
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8/28/2018 6:45am Edited Date/Time 8/28/2018 7:17am
That's the '89 Mugen forks which came with that red-anodized collar and with adjustable rebound

I have 3 such Mugen forks fiitted to all my 89s. Big difference to those first stock upsidedown forks...and leaps better than the stock conventional forks. These actually perform really good. I personally don't like when people install modern internals/parts to their vintage bikes. The italian vintage championship requires you to run bikes as stock as possible, using parts of the era is allowed. But as always - you will always have the guys looking for an advantage and run whole, modern front-ends with bigger rotors (the only way to actually improve brakepower since these rotors had just 240mm diameter which is what we run on our rear brakes nowadays...) and forks with modern internals, adapted modern rear shocks....i personally don't like it and for me it also voids the "vintage" aspect of these races.



Rebound adjuster on the '89 USD Mugen forks:









luckynino
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8/28/2018 7:00am
Here's a copy of the '89 Mugen catalogue. Mugen didn't just offer the famous engine kits but also upgrade kits for suspensions. What most people know are the internal kits for the traditional 43mm forks but they also offered the USD setup complete with tripleclamps:


Here's such a set of '89 Mugen forks as they were available back in the day. They came complete with triple clamps to be fitted instead of the stock, traditional 43mm Showas.


JMX247
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8/28/2018 7:11am
Are those collars available to get, I’m in the process of swapping my 89 cr250 forks over to my 89 cr125 that I’m currently building.
luckynino
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8/28/2018 7:35am
No, they're not available separately. And they are a pain to remove too...there is a o-ring underneath which makes it a real pain to remove them. I had one pair re-anodized as they were too scratched.

Those first USD forks need a good service as they were prone to develop serious play. As soon as they had play they would get sticky and wouldn't absorb small stuff anymore. You need a good suspension guy that is capable to eliminate any excess play in them.
1
luckynino
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12/22/2018 11:56pm Edited Date/Time 12/23/2018 1:17am
After not beeing touched for a long time and serving just as donor for spare wheels this past year i thought my VRP needs some love again. So here i am swapping bolts for Titanium ones. I just dig the look of Titanium. Thjere is some weight beeing saved as well but bolt-tuning is not going to save enough to justify the cost. For me it's just about the look.

There's some 30 years old aluminium on the workbench...


Stripped to have bolts swapped for Titanium


The magic shine of Titanium - i love it


When you though you had a nice bike with perfect bolts already...instead having the steel bolts you just changed on the table you realize how dull and sometimes oxidized they were.


To each bolt some anti-seize


All done she looks nicer than ever. Too bad the magic shine can't be seen on such pictures


The VRP needed some love as for the last couple years the "stockers" took away all my attention as those are the bikes that get ridden


I actually have two almost identical "stockers" for the vintage races


...and last but not least i weighed all my bikes again. The VRP as is weighs 94,2 kilos / 207,5 lbs. As mentioned many times before the aluminium chassis wasn't any lighter than the steel stocker but the stiffness was much improved and this made for a completely different ride.














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philG
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12/23/2018 8:30am
Great detail.. love this thread
Tbteam
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12/23/2018 6:36pm
Nino. Here is my 83 Mugen 125. As you can see, it is fitted with a PC pipe. What would you recommend, and where would I get it?



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