Leaderboard
Popular Content
Showing content with the highest reputation on 01/07/2023 in all areas
-
4 points
-
Well, I had to watch the video twice to figure out if the guy was talking BS or not, and do a bit of looking, but the answer isn't that hard when you know where the "magic number" 5252 came from. So where did the number come from? That is a constant that James Watt calculated when he was defining horsepower in conjunction with his developement of the steam engine. This might all seem a bit pedantic, but I'm putting it in on the off chance that it might help someone understand the video better. I had trouble with that because the guy neglected to define his premises at a couple of spots, and to explain why it is 5252, and that this number only applies if you are talking about horsepower against pound/feet (I learnt that as foot/pounds, but anyway...). So, from here https://en.wikipedia.org/wiki/Horsepower#History and in the next section https://en.wikipedia.org/wiki/Horsepower#Calculating_power and there we also see (I've made it red) the definition of the premise that the guy neglected at that point: we're talking about pound-foot and horsepower. The number doesn't apply to Nm and kW. Edit: I should rather say, as far as I can tell with my limited math, the number most likely won't apply when talking about metric units, as it is part of the definition of hp, and doesn't play a role in the definition of one Watt. The next point at which he neglected to define his premise is where he started talking about 42 at 2,500 revs, and so on. After that he did mention he is assuming a motor with constant torque at any revs. He also doesn't make it clear that the number 42 is "invented" for the sake of the calculation. He say's "at 2,500 rpm you have 42 (units of power)". That 42 sounds like a fixed value, but is not. It is just the number he chose to use for his example. (I suspect he enjoys reading Douglas Adams...) That should have all been explained before he started in on his example calculation. So, enough nitpicking. I hope that helps somebody...3 points
-
Enjoyed that memory; as an 18 year old my Dad hit his mid life crisis & bought the 2.0 four cylinder model that came before the V6. I fell in love with the sound of the engine, the look of the car & the handling3 points
-
3 points
-
I decided that I had a loose timing chain after a timing light showed erratic movement on the flywheel as rpm increased. I tried to get video of this, but it was beyond the combined abilities of borescope, old workshop laptop, & me. The obvious fix was a new chain & tensioner. I chose the more expensive gear replacement because, um... Now I find that the oil pump is worn. The needle roller inner race is grooved, and the shaft has 1.5mm slop. As the direction of side loads on the pump shaft are opposite when changing from chain to gear, a new one is on order. A Valpolini gasket is waiting to go on after the timing chest cover is powder coated. I tried to remind myself of a lesson from my father: "If it's not broken, don't try to fix it", but I'm a slow learner.3 points
-
Iirc there's a saying,,, HP is what wears parts out,,,torque is what breaks them,,,2 points
-
It wasn't that clear to me. I could have sworn that the sticker on the rack on the GTR doesn't have that much silver on it. But I've had a closer look and done some clicking around in the interweb, and I think you are right. It looks like I should probably get on to that... I'm convinced it is still available from HB. See my link further up. It's on the web site, and SD have it listed as well. SD claims between 2 and 8 weeks delivery time, HB says "exact delivery time on request", so I reckon they only build it when the order comes in. Yes, it is less than a quarter of the new price. Hmmm.... Funny thing: HB lists €430,- and SD €369,- https://www.stein-dinse.biz/product_info.php?products_id=68139 dunno how they do it, but SD seems to always be cheaper for HB products than HB themselves.2 points
-
Are you aware of this? (You need a bit of spare pocket money....) https://hmb-guzzi.de/Oil-Pump-CNC-1100-cc-models The bloke and his business enjoy a very good reputation in German speaking Guzzi circles.2 points
-
Contact Barnett Clutches & Cables in Ventura , Ca. See if they can help . I got a throttle cable made from them and got the best price / quality from these people .2 points
-
It’s a great little question… harder than you’d expect Have a crack at answering it before actually watching the vid So, what would you say if a spotty kid specifically asked, “Hey mister, why does Horsepower & Torque ALWAYS cross at 5,252 RPM?” As for me - I’d probably repeat my mother’s exasperated answer when I was a kid… “Y’s a crooked letter, & you should know better!” That’s when I knew the day would go well for me if I shut up… 😏1 point
-
1 point
-
I see that HMB and Stein-Dinse both offer their own alternatives to the MG design, and I believe that the bearings are included. They also both sell the woodruff key GU13148300 that was missing from my pump shaft. The bike shows 53,326 miles (85,819 km) on the speedo.1 point
-
Thanks, AudioMick. What do the German speaking people think of the Stein-Dinse pump? It is a lot cheaper than the HMB pump. Moto Guzzi Oil pump ŽspezialŽ - big models - Stein-Dinse Online-Shop1 point
-
I used to go to this club "(Theresa's) quite a lot in 1970-1971..on the South Side of Chicago when I lived there Saw so much good blues there ..Including Junior and "Phil "..(Buddy).1 point
-
^ that's a lovely Nero, and with the Titanium Kit Racing exhaust.1 point
-
Is that the Input shaft ? Agreed that is an odd failure. As the experts have said, clean clean clean, make sure there is no loose bits in there, new bearing , reassemble and ride. Andy1 point
-
I'm with Pete. Wash everything out as well as possible, replace the failed bearing and drive on. On my last lube change I tried out Chevron Delo ESI 85/140. It's boron-based rather than ZDDP, has a thicker film surface and on my straight-cut gearbox made such a huge difference in noise that I wish I'd have measured it somehow. It's not on the shelf at your local auto parts but I think it's worth the wait to order.1 point
-
For a V11 Sport, @Lucky Phil speaks highly of the Rizoma mirrors on his V10/11Sport:1 point
-
Odd failure. I'd replace the bearing and see what happens. Make sure everything is cleaned out thoroughly and check the other bearings in the box.1 point
-
Vince had no problem dismantling the gearbox Unfortunalty he found a bearing had failed Concern is has debris from bearing damaged other bearings Need to decide whether I get Vince to rebuild gearbox or find a 2nd hand box1 point
-
ratchethack's 11-JAN-2009 post worked for me: "1. To get out of your current fix, reach underneath the rear of the right-hand side cover where it meets the muffler/pillion peg hanger, where you will find the cable shroud for the seat release. While turning the seat release key full counter-clockwise as you normally would, pull the cable shroud down about an inch or so. This will give the cable a few mm more travel, and release the seat. Since this takes both hands, you might need someone else to push down and pull up gently on the rear of the seat at the same time for it to work." However, rather than employing his long-term fix, I simply bent the latch arm a bit (+/- 3mm) so the latch completely opens when I turn the key (counterclockwise). My latch arm was bent a bit the wrong way anyway so the cable angle is ever-so-slightly better now too.1 point
-
1 point
-
If you mean "Guzzi specific tooling" there is only 1 and that's the flywheel holding tool which is cheap to buy and needed when torqueing up the flywheel bolts. Maybe a clutch plate alignment tool for the twin platers. Not necessary on a RAM single plate unit. The rest is just std tooling. Even buying a few special tools is a lot cheaper and easier than taking it to a Mechanic. Ciao1 point
-
I think this is correct. The Rosso Mandello was the first V11 to have the RAM parts. The Scuras and Tennis were made later (2002 models). The problem flywheels seem to be limited to the 2002 bikes. It seems safe to leave the stock unit in a Rosso Mandello. But I would absolutely replace it in a Scura or Tenni.1 point