| Author | Message | ||
     Stirz007 |
I've got a 93" shovel motor I built a few years back for another project. It seems I have a lot of time on my hands these days, so I'm dreaming up a new project to keep me occupied over the winter. Is anyone roadracing big twins? If so, any ideas on sourcing a frame (modern race geometry, light weight)? I'll likely use the motor, primary belt drive and 6-speed tranny, but beyond that the project is open-ended. The idea is not to be actually competitive, but to maximize giggles.... | ||
| Trojan |
Is anyone roadracing big twins? Other than drag racing or maybe vinatge racing, I don't know of anyone that is (or woudl want to) race a big twin H-D. Slow, low revving, heavy and ponderous is not the basis for a decent road racer really. Unless of course you have a spec class for the same bikes, then it can get quite exciting  | ||
| Hybridmomentspass |
actually a bike was just released/shown, BTR maybe? that was a bigtwin HD motor in a sportbike style frame etc i'll dig around in a few and see if I can get a link for you | ||
| Hybridmomentspass |
http://thekneeslider.com/archives/2012/10/17/btr-m oto-gp-big-twin-sport-bike-track-day-action/ http://www.btrmoto.com/ | ||
| Bob_thompson |
I have always been an enthusiast of big twin sport bikes and why I built my first 86 cu. in. Sportster back in the 70's as a cafe racer two years before HD brought out their CR1000. Then there was my Buell M2 Cyclone with all the handling also. Great! If you do something like the BTRmoto bike Jeff I think you would have something real special but maybe not to race. And then maybe there is a venue where you could. You are already doing fine with your 1125R. Go for it and give me a shout if you need any help where your son cannot help. Bob. | ||
| Firstbuell |
Curt Winter [not me!] crafts some pretty cool H-D stuff he's local & I've eyeballed them - well worth a serious look also, call Kosman [their way-cool prototype was stolen a few years back] or Steve Storz | ||
| Moxnix |
FXR frame. | ||
| Stirz007 |
Cool - thanks for the comments. The BTR looks promising, and I'll see what I can find out on the others. Bob - thanks. | ||
| Firstbuell |
so Moxnix, Stirz007's motor + your FXR skeleton then what? how about: XR1200X upgraded forks fatbar on risers top-drawer rear shock[s] - mono or twin? no idea about bodywork...... | ||
| Stirz007 |
Bodywork is a whole other problem for sure. Monoshock would be less dollars, but clearances could be another issue. I'm liking the BTR set-up, except for that funky swingarm. FXR frame would have to be modified (too much rake) and is heavier than I'd like.... I've done some Frankenstein projects in the past and part of the 'fun' is figuring stuff out and coming up with solutions. | ||
| Bob_thompson |
Jeff, how about searching around for an older Buell tuber frame & swingarm, maybe something complete with a blown engine, and shoe horning your big twin engine in it? I believe it would be much less work and you would end up with pretty good handling too. With those frames made of mild steel(I believe), fairly straight forward cutting and welding. And quite a bit of bodywork available from Airtech and others. Just a thought. Bob | ||
| 46champ |
I thought all Buell frames were chrome moly. That was the maine reason they were so much lighter than solid mount Sportsters. We won't talk about rubber mount Sportsters. | ||
| M1combat |
"That was the maine reason they were so much lighter than solid mount Sportsters." No... They're lighter because the frames are made to be light. Sportsters are heavy because everything is done simply so everything has something to bolt to... It's that simple. Nobody really thinks when they design a sportster. Sure there's some thought put into it, but they don't really need to "think". They just make it look like a motorcycle and it's all good. With a Buell you have people spending hours trying to find ways to make one bolt do two things, one frame do two things, one swingarm do two things and on and on. It's in the thinking involved and the solutions arrived at. Using lighter metal is easy. A uniplanar engine mounting system is not. Buell does easy and not easy. HD does easy only. | ||
| Deanh8 |
FXR Frames have ~28* of Rake, XR1200 Trees Bring them back 1.5* and these cups bring them back another 3* without messing up the trail. I should have about 24* of rake when im done with my build. I know the 19" front wheel wasnt exactly a great choice but I have my Buell if I want something "better". Funny thing is im building this bike using almost all OEM parts... and it should work pretty well. Good mix of 2012 FLH, VROD and XR Parts.     | ||
| Firstbuell |
wow! I can't wait to see more of Deanh8's moto - very exciting Qs - what model was the source of: F 19"? R? size? swingarm? | ||
| Deanh8 |
19" Wheel is from a 2012 VROD as with the brembo brakes Rear is a 17" XB Wheel Swing arm is 2012 Roadglide, with VROD Brembo Rear Brake XR1200X Lower Tree, Custom Upper, XR1200X BPF Legs. I took the "rake" cups for a touring bike (for the big 23" wheels and crap) and just turned them around to "derake" it. |
