Search found 16511 matches
- Wed Mar 27, 2024 12:43 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
So an update on the saga…. I found a source for genuine Yamaha crank seals and got them ordered, but the hunt for std size pistons wasnt going so well. Talking to PJ Motorcycle engineering (2 stroke rebores and cranks building experts), they advised that the only source of std size DT175 pistons the...
- Mon Mar 18, 2024 7:42 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Oh and while I am commenting on bodges that I keep finding, here is a good one.
When I took the LH piston off, there was 2 circlips fitted on the inner side of the small end!!
That was a timebomb waiting to wreck the bore when it worked its way out
When I took the LH piston off, there was 2 circlips fitted on the inner side of the small end!!
That was a timebomb waiting to wreck the bore when it worked its way out
- Mon Mar 18, 2024 7:34 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Back in bits again waiting for the new seals IMG_5030.jpeg As I have a few days to wait i had a more detailed look at the crankcases. I had spotted that there are a couple of the M6 crankcase threads near the back of the gearbox are starting to fail, so I will drill and helicoil them. More interesti...
- Sat Mar 16, 2024 2:25 pm
- Forum: Bike Chat
- Topic: N + 1 Again.
- Replies: 7
- Views: 2231
Re: N + 1 Again.
Some nice bits on it (well if i hide my eyes from the blue anodised tat), so it not a bad addition.
What the plan for it? Sell off the good bits then flog it as a std bike, or just de-tat it and sell?
What the plan for it? Sell off the good bits then flog it as a std bike, or just de-tat it and sell?
- Sat Mar 16, 2024 2:15 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
No time wasting there Al :thumbup: Well that might not be true! I posted the same photos on the RD forum and one of the guys spotted the oil seal on the clutch side of the crank is fitted the wrong way round in my disassemby photos (the castellated part should face the bearing aparantly. I obviousl...
- Fri Mar 15, 2024 9:14 pm
- Forum: Pimp Your Ride
- Topic: This winters project.
- Replies: 64
- Views: 18960
Re: This winters project.
That looks familiarfabiostar wrote:Gearbox and clutch good..
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Sent from my iPhone using Tapatalk
- Fri Mar 15, 2024 4:21 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Today I stripped the bottom end, washed the crank and both top and bottom cases to get rid of the rest of the broken piston bits. https://uploads.tapatalk-cdn.com/20240315/2f30e67d39190108be620d372874f53d.jpg https://uploads.tapatalk-cdn.com/20240315/2a13bd6734430074f505aebcc1d2068f.jpg https://uplo...
- Thu Mar 14, 2024 10:07 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Yes it’s over bored to get it up to 436cc apparently.
Have tracked the model & year of the 2A7 piston to 1977 `DT175 .
Think the are std size, so just need to establish the best aftermarket option for good quality
Have tracked the model & year of the 2A7 piston to 1977 `DT175 .
Think the are std size, so just need to establish the best aftermarket option for good quality
- Thu Mar 14, 2024 8:19 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Oh that’s a shame Al, my RD400 had a partial seizure last time out, but I haven’t investigated it yet. However there is a guy called Mally on the RD400 forum hat had issues similar to mine and it turned out to be aftermarket pistons that expanded too much as it was poor quality. So if you find the ...
- Thu Mar 14, 2024 6:32 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
- Wed Mar 13, 2024 10:28 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Well that’s a huge step backwards! With the 1st drag outing less than a month away, I thought i would start her up, get her up to temperature and make sure all the basics are still working. After wam up, did a couple of hard starts from about 3 to 4000 revs just to see it it wheelies or spins (it sp...
- Tue Mar 12, 2024 8:57 am
- Forum: Pimp Your Ride
- Topic: This winters project.
- Replies: 64
- Views: 18960
Re: This winters project.
There is joyful simplicity to rebuilding a little 2 stroke engine
- Wed Mar 06, 2024 10:20 pm
- Forum: Pimp Your Ride
- Topic: The RD400 drag bike
- Replies: 155
- Views: 37642
Re: The RD400 drag bike
Chaingaurd is required as part of the regulations for the straightliners organised drag events. Looking at the one on my firestorm, i thought it could be a good starting point to fit the RDs braced and extended swing arm, so I contacted Frank & Mac inc, and got a spare one. Some Dremel cuts a ta...
- Tue Mar 05, 2024 8:38 am
- Forum: General Chat
- Topic: Happy birthday Commando77
- Replies: 4
- Views: 2062
Re: Happy birthday Commando77
Happy birthday mate
- Tue Mar 05, 2024 8:37 am
- Forum: The Welcome Inn
- Topic: Hi from Athens
- Replies: 5
- Views: 2556
Re: Hi from Athens
Welcome to the clubhouse