70's RM question

FreshTopEnd
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FreshTopEnd
Edited Date/Time 1/24/2012 2:55pm
Suzuki put out an RM100 for a bit. Was this basically the 125 with a 100 top end, or was it different chassis, wheel size wise?

Another ransom question, are there any youth classes at vintage events?
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BobbyM
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BobbyM 7/28/2008 2:30pm
7/28/2008 2:30pm
good question, from memory i think it was a different frame. the tm 100 was not the same as the tm 125 either...or was it? hehehe
mx317
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mx317 7/28/2008 2:42pm
7/28/2008 2:42pm
The suspension was different on the early ones. We bolted an RM100 engine in an RM125 because of the MUCH better suspension. The 125 had leading axle forks and better shocks also.
JimmyD123
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JimmyD123 7/28/2008 6:30pm
7/28/2008 6:30pm Edited Date/Time 4/16/2016 7:48pm
The TM100 & 125 were the same bike except for the piston, rod, cylinder & head. Only 1hp difference between the two.

As far as the RM 100 & RM 125 it depends on the year. The first year of the RM100 was 1976 and it was very close to the 1975 RM125. The 1977 and beyond RM100s shared the same bottom end (sans the rod) as the RM125 but the shocks and forks were shorter travel and less quality. They also had different exhausts and the carbs may have been 2mm smaller (32mm vs. 34mm).
newmann
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newmann 7/28/2008 8:32pm
7/28/2008 8:32pm
There are youth classes. Or kids that can actually ride decent can ride most vintage classes. Local or regional clubs and events though. You won't find that at any AHRMA (American Historical Racing Motorcycle Association just in case anyone doesn't know) event. They still have their heads so far up their asses that they can't see the benefit of having a family be able to travel the country to their events and actually be able to do something as a family. Even in these days of four and five dollar a gallon fuel. So, unless your kid is sixteen, just leave his ass at home with the grandparents or the neighbor. Or if he's under the age of eight, you could bring him along and have him organize and run the sign up booth at the AHRMA national events. I'm sure he could do a better job than the hired help they had here in Texas this year. What a clusterphuck.......spent more time in the signup line than I did on the track. And I had PRE-ENTERED!!!

But, back to 100cc stuff, we just fired up one of our freshly restored Jeff Ward Mini Elsinores and were ripping up and down the neighborhood just yesterday trying to get the jetting worked out. Looks too good to ride, but we plan on thrashing it anyway. It can always be restored again when we are done! We'll be getting back to racing with the Evo Vintage and the Texas Vintage Racing clubs later this year. Going to be so cool to see a JWRP bike ripping it up on the track after all these years.

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mx317
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mx317 7/29/2008 4:34am
7/29/2008 4:34am
At Mid Ohio this weekend my friend made the comment that he wished they had a vintage mini class so his daughter could ride his VERY trick XR75. We may have to come out and hit one of those Texas events. Any on the eastern side like at Swan in Tyler?
newmann
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newmann 7/29/2008 6:46am
7/29/2008 6:46am
Check out the website for the Texas Vintage Racing Club. They are based around the Dallas area and typically race North / Northeast Texas.

www.tvrc.org
ThePipe
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ThePipe 7/29/2008 11:28am
7/29/2008 11:28am Edited Date/Time 4/16/2016 7:49pm
Ditto what JimmyD123 said (Depends on years)

79/80 style
Airbox was different /
Rear brake pedal-> Dif
CDI box-> dif
FreshTopEnd
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FreshTopEnd 7/29/2008 12:10pm
7/29/2008 12:10pm
This one's a 77. From the pic, it looks a lot like the very first rm 125 without the leading axle forks (75?) but with the newer alloy tank on the 76 and 77 bikes.

BobbyM
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BobbyM 7/29/2008 7:54pm
7/29/2008 7:54pm
JimmyD123 wrote:
The TM100 & 125 were the same bike except for the piston, rod, cylinder & head. Only 1hp difference between the two. As far as the...
The TM100 & 125 were the same bike except for the piston, rod, cylinder & head. Only 1hp difference between the two.

As far as the RM 100 & RM 125 it depends on the year. The first year of the RM100 was 1976 and it was very close to the 1975 RM125. The 1977 and beyond RM100s shared the same bottom end (sans the rod) as the RM125 but the shocks and forks were shorter travel and less quality. They also had different exhausts and the carbs may have been 2mm smaller (32mm vs. 34mm).
good info..thanks jimmyd
Bill163
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Bill163 7/29/2008 10:35pm
7/29/2008 10:35pm
mx317 wrote:
The suspension was different on the early ones. We bolted an RM100 engine in an RM125 because of the MUCH better suspension. The 125 had leading...
The suspension was different on the early ones. We bolted an RM100 engine in an RM125 because of the MUCH better suspension. The 125 had leading axle forks and better shocks also.
I did the same thing for a buddy I put a 77rm 100 engine in a 78 rm 125 and would kill the 100 class at OCIR.Use to get protested all the time.
NetMXer
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NetMXer 7/30/2008 9:51am
7/30/2008 9:51am
I rode the 74 TM100 and it was the same as the TM125 with a smaller top end. I also rode the 76 RM100 and it was the same as the 125.
JimmyD123
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JimmyD123 7/30/2008 6:19pm
7/30/2008 6:19pm
No not the same. The 1976 RM100 had a down pipe and was a five speed based on the 1975 RM125. The 1976 RM125 had an uppipe was a 6 speed. Google it and check images.
Oldschool
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Oldschool 7/30/2008 8:19pm
7/30/2008 8:19pm
I had the 77 RM 100 "B" , that was the year it was seperated from the 125
motogeeze
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motogeeze 7/31/2008 4:08pm
7/31/2008 4:08pm
Not to hijack the thread but newmanns post about the AHRMA no kids rule and sign up was dead on..just one reason your seeing so many "splinter" organizations such as TVMX, FLVMX and SEVMX ( of which I am a member) spring up around the country...I still hold an AHRMA card and hope for things to work out but for anyone that wants to enjoy some fun on old bikes with old guys AND their kids, check out one of the clubs in your area..totally worth it...!
NetMXer
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NetMXer 8/1/2008 3:28am
8/1/2008 3:28am
After thinking about this a while, I don't think the RM125 came out until 1976. If I remember correctly, in 74 Suzuki had the TM125 with a yellow tank with a stripe on it. In 75, they had the TM125 with a slightly orange tank and the rising sun emblem on it. 76 was the first year of the RM125 and RM100 and both had the down pipe.
I've tried searching google to confirm this but haven't had any luck. If anyone has any links to sites that could either confirm or deny this, post them. I'd be interested to check them out.
NetMXer
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NetMXer 8/1/2008 3:36am
8/1/2008 3:36am Edited Date/Time 8/1/2008 3:38am
UPDATE: I just found a site that has old brochures and found that Suzuki had both the RM125 and TM125 in 1975. It also looks like JimmyD123 was correct about the 76 RM100 being modeled after the 75 RM125. The 76 did have the up pipe which didn't make it's way onto the 100 until 1977.

Tbteam
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Tbteam 8/1/2008 8:51am
8/1/2008 8:51am
motogeeze wrote:
Not to hijack the thread but newmanns post about the AHRMA no kids rule and sign up was dead on..just one reason your seeing so many...
Not to hijack the thread but newmanns post about the AHRMA no kids rule and sign up was dead on..just one reason your seeing so many "splinter" organizations such as TVMX, FLVMX and SEVMX ( of which I am a member) spring up around the country...I still hold an AHRMA card and hope for things to work out but for anyone that wants to enjoy some fun on old bikes with old guys AND their kids, check out one of the clubs in your area..totally worth it...!
I'm a FLVMX guy myself. I've only raced one AHRMA National which was really fun, but also missed the family element by a mile.

FLVMX races are about as cool as vintage moto can get. A bunch of people that race for fun amd develop friendships with the people thay compete with. AHRMA could learn a valuable lesson fromn the smaller regional groups.

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