When you're obsessed with a mini elsinore and can't afford one

Racerx930
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Edited Date/Time 11/22/2014 11:12am
So the holy grail of my 100cc vintage motocross obsession has to be the Mini Elsinore. I've been drueling over these things for a while and getting one is damn near impossible. So what is a guy to do? Build your own I guess.

Modified stock 75 CR125M





frame Compared to stock frame




Shock angle with 12.5" shocks


Someone else actually started this project and I will be finishing it up. The front end is my main concern right now. I'm actually considering trying to bolt a complete 1980 cr80 front end on to this thing. I realize this is cheating but it could save a ton of time and money.


Anyone have any tips or suggestions?
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newmann
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4/1/2010 8:38pm
Very cool project. About that 80 CR80 front end, it's basically the same as an early CR125 front end isn't it? Why wouldn't you use the CR125 setup? Do you think the front end would be too high? How much fork travel are you shooting for?
Racerx930
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4/1/2010 9:20pm
Joe you might be right I haven't even checked length.

Can you tell me if the 77 125M forks are the same length as the early 125M forks?

I see on one of your bikes it says you didn't shorten the forks?

Also on the Jeff ward ad it says they used 12.5" shocks in the picture then later in print it says 12 1/4. Any idea of your shock length? To go any longer I'm going to have to make the rear Triangle section more acute to get the shocks to lay down (seems possible if need be.)

This things going to be more a of a pitbike than anything so I'm not too worried about travel but I would like the thing to function well, sit even, and look good.

Also I have a few questions on your bodywork. Your rear fender looks proportional to the rear tire and some I've seem look huge. I was hoping you could fill me in on what you used. I have a few NOS mini mudders around here so I'm good on the front. It also looks like you used early 125M side panels on 1 and 76-78 ones on the other?

How about seat and tank? early 73-76 or 77-78 stuff? I have a 73-76 "RC replica" tank with the threaded fuel cap that would probably be sweet on this thing.

Right now I'm just trying to mock some different setups up to see how it's going to look and function
newmann
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4/2/2010 5:18pm Edited Date/Time 4/17/2016 9:51pm
Use 74 or 75 forks and triple clamps. The 76-78 models are larger diameter and considerably longer. The lower fork tubes from the 74/75 models look like they were designed more for the 17 inch front wheel than the 21 inch in the first place. I think the Ward replica of mine has 12 1/2 inch Mulhollands on it. It has the forks shortened. Simple to do, just figure how much shorter you want it and cut that much off the fork springs. Use the piece of spring you cut off as the rebound spring on the dampener rod. Of course that shortens wheel travel as well as the length of the fork. You could have the top of the fork leg cut down on a lathe and regrooved or rethreaded for the fork caps and keep the stock travel. The racebike of ours has 13 1/8 inch Works Performance shocks and we left the front forks the stock length.

On the racebike it uses a stock 74-75 rear fender that has been cut and trimmed to fit the C&J frame. It uses stock 74-75 side panels that have had a little minor trimming done to them to fit as well. Those side panels work a whole lot better than the later model 76-78 panels that flare out for the shocks. Those are really in the way if you were actually riding the bike.

Tank and seat are from the 74-76 XR75. That's what the C&J frames were built for so before you weld everything up you might want to test fit those.


Do you know the length on the swingarm? Are you planning on using a 16 in rear rim? And when you weld the swingarm up will it have the oversized piece of tubing on the outside of it as in the photo or will you find a smaller diameter piece to use as a sleeve on the inside of the swingarm tubing?
Racerx930
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4/2/2010 6:23pm Edited Date/Time 4/17/2016 9:51pm
Newmann the pipe on the outside and the square tubing are just for mock up as nothing is welded at the moment. I will turn down a piece of solid steel and insert it inside the swingarm. I don't remember the length of the swinger but I was told it is the stock swinger shortened 1"

I will be using a 16" wheel but I may try and figure out a way to use an XR100 rear hub and spokes laced to an aluminum rim. I contacted Buchannons about lacing up rims to the Elsinore hubs and it involved drilling the rims etc. and is very costly.

I think I will use the stock length 74-5 forks with the 13 Inch shocks.
I have a ton of 74-76 XR stuff and even a "RC replica" 75 XR tank with the threaded gas cap etc. so that will not be a problem.

Did you purchase new frames from C&J or find some old ones? I tried contacting them many man times and they don't seem interested in getting back with me.

Thanks again for all your help man!

The Shop

newmann
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4/3/2010 7:49pm
I found original Mini Elsinore frames or complete bikes from Ca., Mo., La., NH. and Iowa. Searched forever and once I started locating some of them I just couldn't pass them up! I had to get brake pedals, motor mounts, foot pegs, foot peg mounts and steering stem bushings made for some of them. That shit got expensive real quick.

For the 16 inch rear rim, search for one on ebay off a big wheel 85 or 100. Just make sure it's a 36 hole. If you drill the holes at a little more of an angle, you may be able to use the stock CR125 rear hub and spokes with the spokes layed over at a cross 4 pattern instead of the stock cross three. I have one old mini elsinore wheel at that looks like exactly what they did with it. It might be worth a shot. I had Buchanan drill rims for mine and make up spokes for them. Definitely not cheap going all new.


The way you have that frame cut and fit back together it is going to look like it came that way from Honda . Pretty damn cool.
Racerx930
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4/3/2010 8:25pm
I would like to find an aftermarket square aluminum swingarm to shorten for the 125M.

Thanks for all the advice Newmann!

Right now I need to find an entire 125M front end and some 13" shocks.
BKJ 13
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4/4/2010 9:05pm
Still own one but havent had the $ to restore it,the one i own has a one of a kind profab frame that you could of ran a mono or duel shocks, which thats how I ran it with fox gas shox back in 76/77 it had the turned down cr forks with the fmf coolers on the base of the forks and air caps up top, a full FMF screamer (basicly a death trap that would wheel stand in 4 gear) LOL, xr75 tank, custom seat, cut cr bars, 16in rr 17in frt or 19in when i raced in the reg 100cc class ! Good luck w/the restore/build post more pics as ya go !
newmann
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4/5/2010 7:41am
BKJ 13 wrote:
Still own one but havent had the $ to restore it,the one i own has a one of a kind profab frame that you could of...
Still own one but havent had the $ to restore it,the one i own has a one of a kind profab frame that you could of ran a mono or duel shocks, which thats how I ran it with fox gas shox back in 76/77 it had the turned down cr forks with the fmf coolers on the base of the forks and air caps up top, a full FMF screamer (basicly a death trap that would wheel stand in 4 gear) LOL, xr75 tank, custom seat, cut cr bars, 16in rr 17in frt or 19in when i raced in the reg 100cc class ! Good luck w/the restore/build post more pics as ya go !
Sounds like the same frame that "mini elsinore" here on Vital has. Post up some pics of it!
anniebertmojo
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4/5/2010 10:53am
This is a great read... PLEASE keep us posted on the progress. Good luck
slowvet
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4/5/2010 1:59pm
I don't think that blue tape is going to hold. Very cool project, look forward to seeing as you go photos.
4/5/2010 2:29pm Edited Date/Time 4/17/2016 9:55pm
I know they were not as common as the C&J mini elsinores, but there used to be a company here in Florida called MCS that made a mini elsie kit. They would also build a complete package racer for you as well. I believe some of the frames were nickle plated 4130. First one I saw was in '75.

During 75-76 ,there were at least 8-10 various mini elsie's that were ridden in our 100 expert class in District 8, and a few amatuers had them as well. Bet there are still a few floating around here.
Racerx930
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4/5/2010 6:22pm
It's extra strength should be good. We're going to get this baby tigged up tomorrow, pics to come.

Newmann, would you happen to have any pics of your other minis? I'm looking for ideas and inspiration and I must of looked at your bikes on vintage factory at least 100 times so far. I would love to see some of the others.
Racerx930
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4/6/2010 2:30pm
Doing some more mock up today I decided I'm going to change things up a little bit. If you look at the fab'd up seat rails where they currently meet the back bone it's just going to set the XR tank and seat way too far back on the frame. The frame rails the seat set on are going to attach to the main back bone. a little higher and actually in front of the 2 rails that come up to meet the back bone. This will allow me to slide the seat and tank forward quite a bit.

I'm also going to make the rear triangle section more acute. This will allow me to get a better shock angle with the 13" shocks. When I look at the purpose built mini elsinore frames they look to be built that way.
Racerx930
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4/6/2010 5:41pm
I just got an e-mail from a guy over at Mark's saying he has a repro JWRP mini elsinore swingarm he would sell me. This could be good.
newmann
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4/6/2010 5:47pm Edited Date/Time 4/17/2016 9:56pm
Here's a few pics. Found this one in New Hampshire a few years back. Last used, it had ice screws in the tires, and bad scar marks on the forks and fenders. A roach in appearance, but a true to life JWRP mini.



Here's the one we did with 13 1/8 inch Works shocks and the forks at the stock length. Without bodywork.



Finished, with a T&M head.



The other one with shortened forks and 12 1/2 Mulhollands. Full built FMF 100cc boost ported engine and Mototek CDI.

Racerx930
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4/6/2010 8:31pm
newmann
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4/6/2010 9:30pm
Here's the other one, messed it up in the above post.

newmann
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4/6/2010 9:33pm
Racerx930 wrote:
[img]http://img13.imageshack.us/img13/7047/dsc0004jx.jpg[/img]
Getting that from the guy in Chicago? I loaned him one of mine to copy for his personal bike.
Racerx930
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4/6/2010 9:40pm
I'm actually getting it from a guy he sold one to. He thought he wanted to build a mini elsinore before he figured out how much work it would be. $250 seems like a good price.
Racerx930
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4/6/2010 9:42pm
What about pipes? do you modify a 125M pipe or just leave it alone?
newmann
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4/6/2010 10:13pm
One of mine has a NOS JWRP pipe on it. The racebike has a FMF. I ended up taking the one in the photo off of it since it was also a brand new pipe and put a used pipe on it. Had several to choose from and although they looked nearly identical, it was a tossup on which fit and which didn't. With your frame a CR125 pipe ought to fit perfect.
Racerx930
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4/7/2010 7:04pm
So I got the aluminum swinger, Fox Gas shocks, and a front end fitted with a DG kit coming.
Racerx930
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4/9/2010 4:14pm
Now for my next question. I'm capable of lacing my own rims. I've talked with buchannons about spokes and that part won't be that bad. However I can't figure out why the rims will need to be drilled out?
krazee1
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4/10/2010 9:59am
Rims are drilled at an angle to match the hub and disc brake hubs are normally a smaller circumference. If the holes are not the right angle the spoke will get a kink in it.
Racerx930
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4/28/2010 10:38am Edited Date/Time 4/17/2016 10:28pm
After I get my clamps I will get it all mocked up and get more pics. I did find another guy who is local that built one based on a 78 frame that looks pretty good.
Racerx930
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5/7/2010 3:07pm
OK clamps are in. I disassembled my forks to powdercoat my lowers and put new seals in. I can't find a service manual anywhere and need to know how much oil goes in the forks of a 1975 CR125M

anyone know?
newmann
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5/7/2010 5:20pm
160 cc.
Original 44
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5/7/2010 8:15pm
Thanks guys for posting the pictures. Awesome bikes.Cool
RC
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3/3/2011 11:38pm
I have a few mini elsinore tips if you are interested give me a call thanks RC 949-307-2136

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