Messages

[Pair of 1975 Yamaha RD125s]

(not mine)
Really nice looking pair of low-mile 125s! A few really minor issues but easily fixed (missing badge on left engine cover, missing mirrors, oil leak (oil pump?).

Pair of 1975 Yamaha RD125s
https://bringatrailer.com/listing/1975-yamaha-rd125-5/

Nice score Jim! Those are fun bikes! That's a really nice looking one.

I've worked on a few of them over the years. I just had one here a couple months ago that I was repairing for a guy (carb rebuild, oil pump rebuild, new clutch, electrical troubleshoot).


At 7K miles you might want to check the brushes (there are 4). The ones on this bike, which has a few more miles than yours (9500) were toast.

The date hasn't been announced yet but I would assume it will be in the fall like the past few years. Last year was Sun Oct 8 so keep that in mind.

I see a Left side carb on the DS7/R5 Frankenbike pictured?

You're right. That one did have carbs, must have been thinking of another bike there.

Jumped on the FZ and paid a visit to Sudco today. Likely my last time there since they are shutting down at the end of the month, and then the building will be sold.



I was able to get a look at some of their bikes they've had stored in warehouse for decades. Quite a few bikes stashed away there. They will all be sold. They had a really nice late-80's Euro Transalp and a JDM Katana 750.  Most haven't been on the road since the late 70s to late 80s based on the plate tags. He said make an offer on any of the bikes that I liked.

This Yamaha is a little bit franken bike. DS7 bottom end and tank, disc front end, R5 side cover. It may even have a 350 top end. Pretty beat and carbs are missing.


Nice looking SC500. There was also a pretty complete DT400B hiding in the back in another row.

Kazakhstan GP postponed until later in the year due to flooding in the country.
https://www.motogp.com/en/news/2024/05/03/grand-prix-of-kazakhstan-postponed-until-later-in-2024/497181

Sounds like the Kazakhstan round may take place Sep 22 instead of the India round. The India race is subject to cancellation because of late payment issues.

The flat hard back of the filters can cause reversion waves and interrupt the intake signal. This can lead to flat spots and tuning/performance issues.

Great looking bike! Well done sir!
Love the harness work and other details (front brake, pipes, etc.).

No! I hope this isn't true.

Looks like new rules for 2027
Wonder if that will give KTM, and Aprilia a push to put their GP V4's into the next gen street bikes. As the engine size and fuel is to be changed...?

The 2027 rule change has been talked about for quite a while. Here's the summary of changes:
--ENGINE: Displacement reduced to 850cc. Max bore reduced from 81mm to 75mm.
--FUEL: 100% synthetic (non oil refinement derived) fuel, up from the 40% requirement this season. Max fuel load reduced to 20L from 22L, and 11L for the Sprint race.
--TRANSMISSION: Number of gearbox ratios (pairs of gears) permitted will reduce to 16, plus 4 different overall ratios for the primary drive.
--SUSPENSION: All ride-height and holeshot devices will be banned.
--ENGINE SUPPLY: Reduced to 6 for a 20 race season, and 7 for a 21-22 race season.
--AERODYNAMICS: Front end max width reduced by 50mm and pushed back 50mm.
--WEIGHT: Minimum bike weight 153kg.
--DATA: All teams will share GPS data.
--CONCESSIONS: Revised to four levels that will be adjusted mid-season. New teams that have not raced in the prior year will be given the highest concession level, Rank D. All other teams will start the season at Rank B.

NOOOOO! Shit!

Chad is the guy I deal with over there.

[1972 R5 Yamaha 350cc street bike - $650 (Silver Spring)]

Definitely seems worth it for only $650.
400 front end and I see some NOS dykes pistons and some boxes of rings there too.

Here's the ad info for reference, since I don't think it will be online for very long.

1972 R5 Yamaha 350cc street bike - $650 (Silver Spring)
1972 R5 Yamaha 350cc street bike (Not running) plus extra fairing and two Yamaha 350 parts/rebuildable engines. Frame had been powder coated, clean but for shock absorber. Project bike stored inside, you get clean title and rebuilt engine, ignition box issues remain. $650 for all, $600 for bike, cash only.

This event takes place every Saturday morning, and has been going on for almost 40 years. It started with just a small group of friends meeting in a parking lot. https://www.donutderelicts.com/
Some pretty wild stuff shows up there and the lot gets packed.

Joe,
The two large upward angled nipples on the inboard side of the carbs are bowl vents. They were originally connected with a hose to the airbox. I just connect a short piece of hose to mine and let them hang down. Some people who are running a Y-boot instead of the stock airbox drill holes in the bottom of the boot, add nipples, and run hoses to them. A third option is you can remove the brass ball in the bottom of the bellmouth covering the airjet, clean the jet, then block off the vent tubes. Do not block the vent tubes unless the airjet has been unshrouded.

The two smaller nipples on the bottom of the bowls are fuel overflow for the float bowls.

[1979 Yamaha RD400F Daytona Special]

(not mine)

This Daytona sold on BaT a little over a year and a half ago for $9500, today it sold for $16,750! And it appears the seller made no changes and only put 30 miles on it.

1979 Yamaha RD400F Daytona Special
https://bringatrailer.com/listing/1979-yamaha-rd400-daytona-special-10/
Sold for $16,750 on 5/5/24