These Air cooled Engines desperatly need quick cooling..hence THE SURFACE AREA was increased by approx 25% in these Flower head
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^^^^ AWESOME AWESOME AWESOME SIR!!!
This is exactly what I was expecting to hear; like I said before, the aircooled RD350 that made about 45bhp had these type of fins & I guessed the same would be applicable for Yezdi's too; again, if I'm not wrong, I assume these ones made 16Bhp or something. -
Originally posted by srinikasyap View Post
Rare...hm!! okay
Failures i guess.
...
Hello Srini shaab.....you are suppose to be authority for "For Ever Bikes"
If you are talking about " Flower Type Cylinder Head" in Yezdi s....than it is 100% wrong!!
Our Yezdis are Indian cousins of CZ Enduro 250, as they where basically Street combined Off roaders, who had a enormous mid range power, naturally these type of machines need heat dissipation for endurance run, hence These Air cooled Engines desperatly need quick cooling..hence THE SURFACE AREA was increased by approx 25% in these Flower head, it is also called Porcupine heads at some parts of the Globe!! (The fins where twisted into helical profiles, further increasing the Air contact Surface area)
......friend in Orissa
Why, was that Trichy thing rejected???
@srini: you should ask some of your "solid works" dudes to find out the Surface area of both the type of heads....will you??
....there should be some reason for that. So i am kind of guessingOriginally posted by srinikasyap View Post
No reason rather than "IWED"
Intially the already used Flower head tooling(Dies) came from Chezh..after few thousands of castings...the tools(Dies) had its natual death...after that our Ideal Jawa Engineers made things simple, by making the straight fin design..which will be more Economical in both ways ( Tool cost & product cost)
This practice is nothing new for our Indian Automobile Manufactures
From Vespa to Chetaks , G2 RE s to later versions, from Morris Oxfords to Ambys, even RD type A to RD typeB ,ZundappKS175 to FuryDx175 etc...
So guess by now you would have guessed what the hell IWED is
I - Indian W-way of E-economical D-design
regards,
KMK
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Yezdi na Srini, Yamaha na Aarge..shogun na Yamdoot...you guys really rock
I envy you guys when seeing few follow their passion what may happens
Cheers to you & soon I too would follow in to my dreams & passionLeave a comment:
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All fellow Yezdi fans I'm out to pick up my Roadking today evening a 1996 and I'll be riding one after 14years just can't stop dreaming of the feeling coming back to me after 14yrs. shall report back with pics soon.Leave a comment:
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Wow, that is indeed a beautiful bike. The carrier looks like a period accessory. I have a similar one that I got along with a 1971 jawa.Leave a comment:
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Stunner, even in B/W, it looks beautifulOriginally posted by aargee View Post
TMS should be 1975-76.
I love the carrier on the back, have been searching one for ages.Leave a comment:
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This is my 1979 Model B.Originally posted by Bluesmoke View Post
Mods made: Jawa Tank Key ( not the original Tank key, Fabricated one), Jawa original Throttle, Flower head, Jawa 559 Nacelle& Speedometer, Jawa Tail Lamp, Jawa handle bar.
The tank switch is the ignition switch.Leave a comment:
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Srini, the tank is that of Jawa, but the engine is Yezdi? because the Jawa engines were rounded? Am i right....I'm confused. But all the same it is a beauty alright! What was the tank switch for? I'm new to all Jawas and Yezdi's, except for the auto-clutch I dont know very much else.Originally posted by srinikasyap View PostMy Model B
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72 yezdi? not possible argee. Jawas were rolling from mysore till mid 73. Once the contract was stopped Yezdis were manufactured. So First model of Yezdi was the Model B. It was in production from 73 mid. Check and let me know please. Very curious to know.Originally posted by aargee View PostLeave a comment:
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^^^ My Father had a 72 model Yezdi; I was browsing through the pics a few weeks ago & was quite surprised to see that one has this type of fins. I was not sure if my Father had a replacement fins (got carried away due to RD). The above post clarifies.
Will try posting that pic sometimes. Hope you don't mind.Leave a comment:
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This was released only during a particular model. probably early 74's. But they stopped the this after that. there should be some reason for that. So i am kind of guessing.Originally posted by aargee View PostFailures News to me!!! I thought these L-R mounted fins provided more cooling ability (remember the RD's, they used to make about 45 Bhp...aircooled 
)Leave a comment:
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