Disassembly, 1978 Yamaha DT175 crankshaft and comparison to CT1 175

In this video I disassemble the crankshaft from the 1978 DT175 Yamaha and compare it to the 69-72 CT-1,2,3 Yamaha's. This Crank is no good but I just thought it would be fun to compare the two. I lost some footage of the disassembly but there is enough here to see what I did.

[@jonsingle1614]

I had a 78 DT175.....bought it new....wish I still had that bike

[@botap12]

beautiful garage, beautiful tools...

[@montana2strokeracer]

Thank you, and thank you for hanging out with me in the shop. Lots more to come, stay tuned.

[@retromechanicalengineer]

Thanks Dale! This will forever be known as the BSA episode. I very much appreciate the shout out. It was very kind of the guys to send you the tee shirts. Interesting to see the development of the Yamaha crankshaft, I wonder how much more RPM the later bikes could produce. Best wishes, Dean.

[@montana2strokeracer]

Yes the BSA episode indeed. There again its nice to be able to educate yourself on the cheep. Very nice jester by these guys sending T-shirts. Thats great.

[@retromechanicalengineer]

Gold medal for attendance at last!

[@montana2strokeracer]

At last!!! The Atlantic didnt hamper your quest.

[@retromechanicalengineer]

@@montana2strokeracer it was a long and cold swim Dale, but it was worth it to be the first to watch a quality Sweger production.

[@markaddy53]

great video as always dale keep it going

[@montana2strokeracer]

Thanks Mark, thanks for hanging out with me in the shop

[@robertrodriguez8167]

Always informative, thanks.

[@montana2strokeracer]

Thanks Robert, I sure appreciate you being here.

[@cainbeeping8480]

Love the shirt LOL Thanks for sharing brother.

[@montana2strokeracer]

Me too, had to razz Dean a bit.

[@LarryJohnson-tc7xc]

Hey Dale, I hope all is well, enjoying the video's. Working on the old Kawasaki f11 250 dumped quite a bit of 2stroke oil out of the exuast chamber trying to clear up a little smoke and let her breathe a little. Keep wrenching

[@montana2strokeracer]

Sounds like a great project, the F5 I have was full of oil too, It was sucking it in from the transmission. I got that fixed, think it was a bad carb mount. I will be working on it someday soon along with a 71 F7 that I have acquired. Lots of old bikes waiting on the slow old guy to work on them.

[@UPTHETOWN]

I got here from Dean's chanel. 👌

[@montana2strokeracer]

Welcome Andy, Im working on two strokes too, Its Dean that introduced me to the BSA Bantams, I just think there cool.

[@gregslair4278]

Informative as always.

[@montana2strokeracer]

Thanks Greg, just nice to educate oneself occasionally on unfamiliar equipment.

[@SilverWedge]

Good information.

[@montana2strokeracer]

Thank you, my hope is that some good info comes from these videos and is helpful to folks.

[@Klik_dibawah]

Good

[@montana2strokeracer]

Thank you, thanks for following the channel.

[@frankdillon6127]

present!

[@montana2strokeracer]

Glad to see you in the audience Frank

[@carlwilson1772]

That was great Dale. I know my brother loved the mention! Nice to see you wearing a BSA t shirt! Very interesting to watch the removal of the bearing. Always a challenge when they are installed so close to a feature. I had a similar situation with a bearing on the rotor of an electric motor. Couldn't get anything behind it. Ended up using a Dremel to grind a slot in the outer race, allowing me to split it with a screwdriver. Then removed the balls and cut a similar slot in the inner race, then split that. A lot of work! I like your hydraulic press, is it an air over oil one? Great post, look forward to the next one.

[@montana2strokeracer]

Thanks Carl, yeah I had to razz Dean a bit. Hey that is a good idea. I was thinking about the torch myself. Since it was junk anyway. But it came right off...I was surprised. Thanks for hanging out in the shop with me.

[@carlwilson1772]

@@montana2strokeracer My pleasure. In my case the bearing I removed was right up against the rotor of a motor. So heat was not an option. I have since used the technique of cutting a slot and splitting the bearing a few times, and it works well.

[@yusufsevgi4309]

Yamaha dt 125 ile 175 kırank aynimi

[@frankdillon6127]

heat/penetrating oil?

[@montana2strokeracer]

Yes, the torch is what was running around in my mind.

[@gertkristensen6451]

i use autogen welder /burner heat inner race up quick and hard to read color you must have Gas/oxygen in you shop

[@montana2strokeracer]

I had thought about that, I do have oxy/acetylene, if the bearing splitter hadn't held that was probably my next move.

[@cainbeeping8480]

Second

[@montana2strokeracer]

Second!!!! Need to work on that brother.