I've been working on an RCR MK II for about a year and I've run into a snag. I've done a suspension setup using the directions mostly based on the build manual from RCR's website and Tom's RCR trackracer. I've started to set the body and I've set the front body on the bobbins, moved the rockers as far back as possible and matched the front body piece. The wheels are well centered I think and I now have interference with the rockers when the wheel is turned back into the rockers. It's close and I think I can trim to get the clearance to turn more but when turning the wheel the other direction the tire hits the front part of the fender. In other words, I can't turn the steering wheel very far in either direction without interference from the fender openings.
Tires are Goodyear Blue Streaks like used on the originals. I don't understand what I've got happening. It looks right when comparing them to the originals but the tires seem to be to big to fit. Also, they aren't recessed under the fenders like the pictures of the race cars from day appear to be.
I know that this isn't the first project to have used the tires so I'm looking for help trying to figure out what I'm missing.
Gale
I think reducing the OD on your tire is the easiest solution. I’d think you need to stay around 25” on the fronts for a comfortable fit.
Scrub radius also affects the tire to sponson contact point which appears to be the problem Gale has. If for example, IF he was able to machine say 0.75" of hub face of wheel and set tire inboard the problem would be diminished (I am not suggesting he does that-just that might be a possible cure, obviously with considerable investigation before removing metal! ) Bills suggestion that spinner looks to be outboard has merit, check that wheel is snug against hub face and not riding up on drive pins etc. We have had a few members here lose a wheel from just that issue in the past. While Im thinkin about it, have you measured the actual length of wheel arch opening @ hub height on a proper MKII, maybe they are not same as MKI and since you appear to still have to fit the MKII scab's you could rectify if need at same time.The answer is simple, you won't need to turn the steering wheel much, just a blip on the gas will get you around the corner. Also the spinner looks like it should be on a bit farther. check the front track as to what it should be. Scrub r is only the difference between theory and actual tracking with respect to toe out on turns and is not the issue, I think it's all in the tire size.
Is it just me or the fiberglass looks very poor quality ?I've been working on an RCR MK II for about a year and I've run into a snag. I've done a suspension setup using the directions mostly based on the build manual from RCR's website and Tom's RCR trackracer. I've started to set the body and I've set the front body on the bobbins, moved the rockers as far back as possible and matched the front body piece. The wheels are well centered I think and I now have interference with the rockers when the wheel is turned back into the rockers. It's close and I think I can trim to get the clearance to turn more but when turning the wheel the other direction the tire hits the front part of the fender. In other words, I can't turn the steering wheel very far in either direction without interference from the fender openings.
Tires are Goodyear Blue Streaks like used on the originals. I don't understand what I've got happening. It looks right when comparing them to the originals but the tires seem to be to big to fit. Also, they aren't recessed under the fenders like the pictures of the race cars from day appear to be.
I know that this isn't the first project to have used the tires so I'm looking for help trying to figure out what I'm missing.
Gale