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To those who have seen an original 1970 vs 71 and newer blue Rupps...the blues are different in what way? I only have a 70 for reference.

Original 3.5 hp on my 1970 Rupp Scrambler has really started smoking. Seems worst at and just off idle. Should I assume it's the rings? If you agree, think I can get away with just a hone and rings? Really don't want to go thru the hassle of boring it . Not sure if I can even get oversize parts...

I have decided to upgrade the rear shocks on my 70 Scrambler. I weigh in at 250 and the originals are not doing the trick. I have seen some new shocks rated at 450 LBS compression. and some at 730 LBS,Not sure how that relates to my application.. What have you guys used? Thanks Jim

Just getting time to work on this Scrambler I bought last fall. It's the Holy Grail for me as it's a twin to the bike I got for Christmas as a 12 year old. Crazy original bike. Someone added a kill switch and the previous owner told me his cousin [the original owner] added a Roadster exhaust...

Guy told me it was a Rupp, but of course it is not. What have I got here?

Today I attempted to rebuild the original diaphrarm carb on my 1970 Rupp scrambler. I ran into a couple questions.. I removed the carb with the intake manifold still attached and noticed there was no gasket between the manifold and the block...is that right? Second question, the diaphragm I...

Guy wants to trade me a 7 hp subaru engine off a pressure washer...I never heard of them before. Do they work on a vintage bike? Kinda looks like a predator no? [I've never seen it in person] Thanks you...

I have a couple snowblower engines in various degree of being apart...detailing, painting exhaust and carb changes blower / recoil swaps... should I replace the coil just because I'm there? Are the cheapo chinacumsehs good enough? [$11]

I have two bonanza BC's.. Last week I took one fork apart and the struggle to pull the springs out wasn't too bad.. Today I went to dissemble the second..wtf... For the life of me, I can't get the springs out of fork. The top portion is seized in the frame tube. Bolts came out easy, springs...

I guess I'm trying to get all my ducks in a row for spring.. Seems like the carb on my hssk40 turns to crap every spring..and spring is coming. I have used probably 3 ebay cheapo specials on it over the last few years. Now I have that engine to make happy and the HSSK50 I just acquired a month...

I have a shroud to put on my hssk50 that takes this style recoil...but none of the recoils I have found, new or used have this screen. As a matter of fact, I can't find another picture of this style screen anyplace. Please tell me what I have and need...

I have both an HSSK40 and a HSSK50 both are about the same vintage. I assumed the 50 was a more powerful engine but today a small engine mechanic told me they are both the same engine with the only difference being the advertised HP. Is that true?

I have to build a couple of exhaust systems in the near furure. What do we get pipe the correct size...how do you bend it?

This has to be asked and answered before, but I searched and couldn't find... Getting ready to put a new engine on my '70 Scrambler and need to paint it. While I was at it, I figured I'd do the tank too. I remember my Scrambler when I was a kid, and it was NOT a particularly shiny finish. I...

I have 3 HSSK 40's and 50's with 'THAT' style recoil mechanism [RED 70 Scrambler] . I'd like to swap it over to the older style recoil like on my Blue 70 Scrambler. I'm sure there is a way to do it but before I go willy nilly ordering parts to see what I can make work, I figured many of you...

I have two Bonanzas, I bought them both within a week of each other, in two different states. Both had the original 'selling new' dealer decal on them and 50+ years ago they came from the same dealer 20 miles away from me! I have them both pretty much apart. Couple questions for the more...

A fella is trying to sell me a Bonanza roller with removable handlebars. What is that?

One of my scramblers has a hsk40 engine on it so I know what I am dealing with on that one Tomorrow I am am looking at [buying?] an old craftsman snowblower with a 5 Hp Tecumseh engine. Are there any difference between the two engines? Can I expect the crankshaft snout to be the same? Thanks, Jim

When I was 10 years old, I had my very first experience with a mini-bike. 1968 and my neighbor got a Bonanza for Christmas! His was a pretty much entry level machine. 3 HP no rear suspension. I'm not positive it even had fenders, but from that day on, I was crazy over mini bikes finally getting...

Looking for an engine for a mini bike project and found these all over the place. Are they clones of some sort? Anyone have experience with one? Thanks.