All Activity

Just an update, all working and starting fine after new coil pack and condenser 👍🏻 thanks all

Airoh helmets STILL have buckles that rust through. I have been investigating stainless steel buckles for 20mm webbing straps, but can only find them for 25mm webbing straps. Anyone found a source of stainless steel buckles for 20mm straps?

In the US you have Hogans, Alex Snoop, Keith Lynas, Vintco

Go to www.todotrial.com and change the language at the top right of the page all the info there.

Some questions come to mind: - Will they offer the same engine capacities? - How easy is it to access the carb? - Where is the e-start battery located? - Does the starter have an over running clutch or solenoid? - How much weight does e-start add? - Did they change the kickstand mount?

Well, at least they put the kickstarter on the "normal" side. Wonder if that is going to annoy long-time Beta purists? But the cylinder reeds are a compromise so they could put the e-start motor where it is.

Yes, points open/points closed, it wouldn't work if it didn't. I have to make a few assumptions.... Are you sure you know how a magneto works ? Where are you showing this continuity ? And are you using an ohmeter ?

https://www.infotrialstorico.it/2025/09/20/beta-sincro-2026-galleria-fotografica-e-comunicato-con-info-tecniche/

A completley new motor with induction through the barrel and a carb in a BETA EVO like chassis redesigned to look like a BETA EVO. I thought someone should do this as it is Trials Central.

Phil, it’s very easy to replace a head gasket/o-rings. I did it for the first time and it only took about 15 minutes and I’m no mechanic. Simply unbolt the head, lift it off, clean the surfaces, place new gasket/o-rings on then bolt it back together, tightening the bolts in a criss cross pattern, little by little, until the torque requirement so you don’t bend/warp the head. I believe your bike is air cooled so you don’t need to worry about draining the coolant. I had a friend in high school years ago, who had no experience mechanically, and he replaced his head gaskets on a TY 250 with no internet or YouTube to help. It’s very straightforward. You can do it yourself for sure. Good luck!

Thanks, Woody. I'm in the US, so I'll have to see if In Motion can ship to me. I will search for a US source as well. We have a rather "fluid" tariff situation and now the "de minimus" exemption has been rescinded which means small shipments (like a sprocket and a nut) go through the same process as a cargo container of goods. If worse comes to worse, I can machine a special nut as I'm fortunate to have a nice machine shop. Finding a sprocket will still be a challenge as I have not had experience with machining internal splines... may have to learn. Again appreciate your knowledge and generosity to share it.

The retaining nut is almost as big as a 10 tooth sprocket which means the chain rides up over the points of the nut when it is flush against the sprocket. To use a 10 tooth there is a nut with a shoulder on the inside to give clearance to the chain, you need to use this nut Depends where you live, in the UK, In Motion have all you need I run a dished rear sprocket on my MAR which only comes in 44 tooth size, this works well with the 10 tooth front

Not sure if there is a misunderstanding here or not. Just to be clear, I was suggesting that you search by rim size (with other parameters as appropriate), and not just limit your search to "TY80 rims".

Hi, this is really helpful. I want to reduce the gearing on my '72 MAR, and the 10T front seems like a good idea, but I wasn't sure what "chain riding over the boss" meant. Is there something that the smaller radius causes it to hit in the case under limits of suspension travel? Also, good sources for sprockets would be useful. I'm new to this...

They are 16x1.40 and 14x1.40 , number of holes is important as are the angles of the holes , I have see the USA wheels on eBay but I will be taking a chance on how true they are if they are better than my wheelsI , think I’ll just be patient and hope some crops up on eBay , the rear 14” I am considering using but the front is in bad shape 🤨 Appreciate that Ron , I’m looking for them in uk preferably , import taxes would make these expensive . I have seen these but will be a last resort

Went to start my 350 TR 77 after a carburettor rebuild And because of a recent injury I can't kickstart it so I used a roller starter I noticed that the bike was backfiring on start up and wouldn't run .It was then I noticed that some of the back fire was between the head and the barrel so it definitely looks likely the head gasket is fubar.. sorry for the long post but how easy is it to fit a New gasket And is there anything that I should be aware of?? Many thanks Phil B

I had no idea what the wheel sizes are for a TY80, but based on the eBay links above they appear to be: 16 x 1.40 15 x 1.75 Have you tried searching "16 x 1.40 steel rim"? There are results in the US. Seems likely the Chinese even make them. Edit: You would need the correct number of holes as well.

Technically interesting, but something I would not want to see in widespread use!

I ride my 2024 EM with the "zing zing whine" across the street from a residential neighborhood almost daily. The electric/ geartrain whine is minimal, nearly silent, but the pop pop 'trialsy' sound I'm hankering for is not necessarily loud, in fact in my fantasy world, its Bluetoothed to my hearing aids.

I am a police officer, so I’ve seen a lot of burglaries and I’ve had my own bikes stolen before. I use a Abus grinder proof d lock through the frame then attach an Oxford grinder resistant 22mm chain to both ends of the d lock and onto a floor anchor. The d lock’s material will blunt the grinder disk. Any chain needs to be hardened and ‘sold secure’ verified. A chain thick enough to resist a grinder attack for any length of time won’t fit through a frame. The weak link is the chain, not the lock. Even cheap locks are secure. Ultimately, you can only slow but not stop a theft. I’ve also put an additional alarm box inside the garage, which in such a small space is deafening. I have an electric roller shutter door which is as secure as anything. Normal garage doors can be bent open at the bottom. Scumbags used to use a car jack to force roller doors open from the bottom. The new roller doors have metal frames to stop this. I also park my car in front of the garage door. A decent ‘sold secure’ door, ground anchor, chain, lock and alarm will deter most thefts.

Appreciate that Ron , I’m looking for them in uk preferably , import taxes would make these expensive . I have seen these but will be a last resort

Hey Jeff! Welcome to the forum. I just did a simple search and found several TY80 original wheels on eBay. Maybe I’m misunderstanding what you need though. Anyway, below are two links to a full rear wheel and a front. Good luck finding what you need! https://www.ebay.com/itm/256739081016?chn=ps&mkevt=1&mkcid=28&google_free_listing_action=view_item https://www.ebay.com/itm/162588017989?chn=ps&mkevt=1&mkcid=28&google_free_listing_action=view_item&srsltid=AfmBOoopomzC1tONF4ljLp0sdbSqOeiIC_rvqKKSSo1g02_aOgSIJGkJkpY

Hi all I’m new to this forum and am in need of some help , I’m looking for a pair of wheel rims for a ty80 or even complete wheels , I’m am restoring a 1976 model , have been told I can possibly get alloy but that’s not the way I want to go with it as I want it original , any help would be appreciated as all avenues I seem to go down are a dead end 🤨

I have an opinion, but you're not going to like it. ONE OF THE BEST FEATURES OF ELECTRICS IS THAT THEY ARE QUIET!!!!!!!!!!!!!!!!!!! See, all that hollering is annoying. Yes, they are even quieter.

I didn't see the post until tonight. You're probably right. I only ride IC trials bikes but the same applies about hearing the sounds of the motor being an important part of riding trials well. As far as electric trials bikes go, I have only ridden a clutchless EM and I could hear the groaning of the motor at low RPM quite well, but someone with poor hearing may have had difficulty. Do the modern EM bikes sound different to the original ones?