Everything posted by RonH
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Rock Oil GRO?
Would Rock Oil GRO work in a 2023 Gasgas TXT gear box? I know Rock Oil has a specific oil for trials bikes but I can’t get it where I am. I’m getting conflicting results from Google Ai and websites. Thanks! Answer: I contacted Rock oil and they don’t recommend GRO. It won’t give the right clutch feel and will most likely slip. They do have the PRO though and I found a guy (Santa Clara Cycles) in California that sells it now at a good, fair price.
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New (old) guy from Australia.
Hi Scott, if I’m e er in Australia, and do very much wat to visit, I will watch out for you. I live in the Pacific Northwest, Oregon to be specific. eagke8 up above is down under though. Good luck!
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NEW DUNLOP TL01 REAR TYRE
I went with the new Kenda Ibex K7105 rear tire because I read great reviews about them and they’re less than half the price of a Michelin or Dunlop. They’re even cheaper than the IRCs. I still have my Michelins on my bike but I wanted a spare rear tire. Every time I looked at the Michelins I felt like they were trying to rip me off. I simply don’t know why they’re so expensive. One can get a huge, fat Pirelli street racing tire that’s DOT approved and designed for high speeds for a lot less than a Michelin. Yes, they are great tires…I’m not saying they’re not. I’m not competing or a professional but I can’t see how a Kenda is going to let me down. Several pros have switched to them saying they’re as good as a Michelin. I suppose people just want to say they have Michelins on their bikes as a status symbol. Well, ok then but I’m not going to throw my money away unless Honda wants to buy me my tires like they do for Toni Bou. The Kenda’s are kind of hard to get here in the states. Many places sell them but you have to be fast because they sell out very quickly. I paid $124 with free shipping even.
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New (old) guy from Australia.
Hey Mate! Welcome to the refurbished forum. You’re one lucky guy because this forum has been down for two months and we all thought it was a gonner. It’s great that it’s back because there’s an awful lot of experience in these forums. I like your bikes. I have a Gasgas myself. I rode a 1974 Yamaha TY250 A back in the day and absolutely loved it. That was in the mid 70s though. Like you, I’m back to riding after all these years. The kids are gone from us too. I’m in Portland, Oregon by the way. I just turned 65 and I don’t have the invincibility I felt when I was 17 but I’m enjoying myself immensely. Stay safe and have fun! Ron H
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TY250A Seat Base Questions
You’re not gong to like my answer but here it is anyway. Yes, painting fiberglass requires a specialized bonding primer and high-quality exterior or marine-grade paint to prevent peeling and ensure proper adhesion. Because fiberglass is smooth and non-porous, standard paints and primers will not bond to it without the proper chemical or physical base. Use a two-part (2K) epoxy primer or a dedicated bonding primer obviously after sanding and cleaning. Use a marine-grade polyurethane or acrylic enamel paint.
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Montesa 311 1993 VIDEO : pure sound
That is absolutely gorgeous and it sounds amazing. Well done!
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Honda Montesa Spain factory fire at 05 June 2026
https://www.gbnews.com/lifestyle/cars/spain-honda-motorcycle-factory-fire-evacuation
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Montesa 315R 2002 D.Lampkin factory replica 69.6kg dry
Cool, you got below 70!
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Beta techno 1994 rebuild: Video
Another great project…can’t wait to see more.
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Made a wheel bearing removal tool out of wood.
I made a wheel bearing removal tool today, based on the Jitsie model, out of Jatoba wood. It has a janka hardness of 2,350 - 2,600. That is extremely hard wood. No pun intended. It dulled every one of my lathe knives to get it done. Cost me $5,50 and 1 hour of time. Jitsie’s is $60. This’ll work on 6004 2RS bearings (20 x 42 x 12) with a center spacer.
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Crank case markings
In 1064, England was at peace under King Edward the Confessor, but the succession crisis began brewing. The defining event of the year was the controversial journey to Normandy by Earl Harold Godwinson. This trip subsequently provided the foundation for the famous Norman Conquest in 1066. Maybe the mechanic who had the case apart before was a history buff too. 😉
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New alloy rear sprocket
Custom sprockets: https://www.rebelgears.com/ https://www.supersprox.com/supersprox-custom/
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White Residue on 4RT Wheel
Simple green is NOT safe on anodized aluminum. It is too alkaline. Just Google the question and you’ll see. I once used it on a red anodized cassette on a bike and it faded it considerably.
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Beta 240 TR34 1988 pure dirt bag.
At least you won’t have to replace that tire…perfect condition. 😉
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Dirty ugly 4RT rebuild.
I forgot about this bike and it’s great to see the progress. The black scheme is awesome!
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1977 Montesa Front Fork Broken
Include a photo when you’ve got it back together. Best of luck!
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Montesa Cota 247 kickstart spring
https://www.amazon.com/-/es/Montesa-Scorpion-Vintage-Manual-Original/dp/B091G4YRW8
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New guy from Bisbee Arizona
SlowDave, keep showing the doctors they’re wrong. I had an accident (electrocuted) when I was a kid that kept me hospitalized for an entire year. The doctors said I wouldn’t be able to run or ride my bike anymore and that I’d be in a wheelchair in my 50s. Well, I did run again and even skied competitively in college. I’m 65 now and still going strong. Doctors don’t know everything. Also, I had a 1974 TY250 myself that I rode in high school after I was released from the hospital. I’m looking for one now myself. I loved that bike.
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Seat for 1974 ty250
You can get reproduction seat covers for cheap and all you have to do is replace the foam. https://www.ebay.com/itm/152173175811?_skw=Yamaha+TY250&itmmeta=01KPVB8X7K75DWFQGXEMP05ASF&hash=item236e3a6403:g:m4UAAOSwxWxg~5Mx&itmprp=enc%3AAQALAAAA8DKQclQvzFwZQpmMrsO4LurgsYX0OYtwnOHG1FqA1%2F4kKnkmO1Tf1vVMAj8S58n4mC%2BLYnlfInRqXIScPwtyzkobh23jam4E7Q9g2reOSh52rFIaNN4L0M9qqSfHPPaW4PSPqfenXRfb2Viv0owk1jo04zzjMlCGznp54xmySvlN4lXY%2BBlFCwrt9aEl1ky0oFIORYTYoP7KkHCURS5NmD%2FvEPsuFzic575YGiyrrX4VpKejiPf4A8dt5HADBGxFVo8pnWJt4rsvnQTq4lAzQPHqi%2FVzqGrbzzJi7qdb7bXYpPBWn%2BbHe%2BztGNRCHkB4sw%3D%3D|tkp%3ABFBMyNSj67Zn
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77 348 Cota Technical specs for crankshaft, any service manuals out there?
I hope this helps. https://www.carlsalter.com/download.asp?p=1074
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Scorpa TY 125 Long Ride convert to trials?
I’m guessing here because I haven’t seen either one in real life but I’d bet the frames are identical which means you could probably take the seat off and put the standard fenders and gas tank on. Call a dealer or Sherco and ask.
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Scorpa TY 125 Long Ride convert to trials?
McMan, just in case you’re interested I found this Long Ride for you. It’s in Mt. Hood, Oregon but the price is fantastic. I live in Oregon but bought my bike from this site from a dealer in Georgia and had it shipped for $300. They routinely have some very good prices on bikes on the website. I got my 2023 Gasgas TXT 250, brand new, for $4500. I’m sure you want the standard version but I thought you might want to consider this one. Oh, I’m not affiliated with the bike or the shop in anyway so I’m not selling anything. https://motohunt.com/l/11480744/2023-Sherco-125-TY-Long-Ride
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Sherco ST 250 fork oil capacity
Modern Sherco ST 250 trials bikes (equipped with Tech or Paioli forks), the typical fork oil capacity is approximately 250cc to 300cc per leg of SAE 5 or SAE 7.5 weight oil. However, it is highly recommended to set the oil level by height (usually 110mm-130mm from the top, compressed, without springs) rather than just volume for accuracy.
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51 year old newbie
Gsinky, I'm 65 and riding trials and just restarted two years ago. Don’t worry about age. I wish I was as young as you. Just relax and enjoy it. There’s a lot of people older than me that still ride.
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New here — Edwin from the Netherlands, just launched a trial news site
Edwin, that is an excellent news site. I’ve put it in my favorites. Awesome!