MetalworkingFun Forum
Todays Project - What did you do today? - Printable Version

+- MetalworkingFun Forum (http://www.metalworkingfun.com)
+-- Forum: Machining (http://www.metalworkingfun.com/forum-5.html)
+--- Forum: Projects (http://www.metalworkingfun.com/forum-7.html)
+--- Thread: Todays Project - What did you do today? (/thread-727.html)

Pages: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 314 315 316 317 318 319 320 321 322 323 324 325 326 327 328 329 330 331 332 333 334 335 336 337 338 339 340 341 342 343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374 375 376 377 378 379 380 381 382 383 384 385 386 387 388 389 390 391 392 393 394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549


RE: Todays Project - What did you do today? - sasquatch - 11-29-2012

Agree, Rick, best wishes in the interview!!

And Brian, an interesting project, thanks for posting this.


RE: Todays Project - What did you do today? - Brian - 11-29-2012

Ok Dallen its Done!

Brian


RE: Todays Project - What did you do today? - TomG - 11-29-2012

(11-29-2012, 10:14 AM)Brian Wrote: Ok Dallen its Done!

Brian

6799


RE: Todays Project - What did you do today? - dallen - 11-30-2012

my contribution to the metal projects I have started for yesterday is this a spring that I made to hold a detent in place to stop a latch from rotating or working its way out of its housing.

[attachment=3842]


RE: Todays Project - What did you do today? - TomG - 11-30-2012

Nice looking spring Dallen. How did you do the closed ends? Did you wind it tight and then stretch it to length or use some other technique?

Tom


RE: Todays Project - What did you do today? - sasquatch - 11-30-2012

Nice Spring.


RE: Todays Project - What did you do today? - DaveH - 11-30-2012

(11-29-2012, 04:12 AM)Rickabilly Wrote: "If you're just going to roll around in that thing you should stay at home where people don't have to look at it" and followed up with "Don't you care how uncomfortable you make it for people that have to look at you".

I just can't believe there is such a pig ignorant person who would say that. That is one of the worse things I have ever heard.
My neighbour and mate is in a wheelchair we use to play cricket together 25 years ago before he was shot. (He had his own security company). He is still my mate.
Smiley-eatdrink004
DaveH
PS. Good luck with the interview.


RE: Todays Project - What did you do today? - doubleboost - 11-30-2012

(11-29-2012, 04:33 AM)Rickabilly Wrote:
(11-26-2012, 05:53 PM)doubleboost Wrote: The 1500 was a triumph engine Smiley-dancenanaSmiley-dancenana
Not the best JawdropJawdropJawdropJawdropJawdrop
Had a crank shaft like a bent coat hanger JawdropJawdropJawdrop
John

Actually John, the BMC 1500 as fitted to the MGA was a completely different engine to the Triumph unit, Quite often the confusion is born out of the whole British leyland corporation debacle and the fact that Nissan bought the rights to the BMC 1500 engine for use in it's small commercial vans and pickups, but based it's very successful A series engine on the lighter Triumph engines, albeit in a very much better engineered outcome to that of the Triumph version. Nissan didn't change anything at all with the BMC engine, even continuing to use UNC and UNF threads, where pretty much all components were interchangeable but with the A series nothing was interchangeable with the Triumph.

The MGA was still a three bearing model that remained almost unchanged except for capacity up until the early MGBs, where it gained two extra main bearings and was still being produced in the eighties, while one might expect that the change from three to five main bearings was in order for the engine to be able to handle more power, when in fact many of the high end historic sports car racers look high and low for the three main bearing models as the lower frictional losses and crankshaft of adequate strength means that they actually produce more power with the same specification of pistons, cam and top end.

The change to bearing specification was made for two reasons one was that it had become deeply unfashionable for a producer to build three main bearing engines and there was a belief that as the engine was being used in heavier and heavier saloon cars as well as the sports cars low RPM lugging might cause increased fatigue issues with the three bearing crank, as it happens the change from a solid crank pulley to a rubberflex harmonic balancer was the step that finally saved the crankshafts from fatigue failure in the heavier saloons.

As you can all tell, I spent way too much of my youth inside historic racing car engines Blush

Best Regards
Rick

Hi
Rick
Was that the same as the oxford 1622 cc engine
The triumph units were shite
But the 1622 oxford engine was a scaled up a series
Nissan did use this engine but i seem to remember they put a alloy cylinder head on to it
John


RE: Todays Project - What did you do today? - Rickabilly - 11-30-2012

(11-30-2012, 11:34 AM)doubleboost Wrote: Hi
Rick
Was that the same as the oxford 1622 cc engine
The triumph units were shite
But the 1622 oxford engine was a scaled up a series
Nissan did use this engine but i seem to remember they put a alloy cylinder head on to it
John

Yes John, the oxford 1622 was another version of the same engine, the Nissan BMC 1500s in Australia had cast iron heads but it's not too much of a stretch to imagine Nissan fitting an alloy head to it, considering that they were available in the aftermarket and Nissan had the Aluminium foundries at hand to make ally heads if they wanted to.

All of these engines 1500, 1622 an 1798 had the same stroke 3.5" if I remember correctly. In the 1500 that meant a very long stroke to bore ratio as was the practice at the time in Britain as a result of the taxation laws, after these laws changed they just bored the engines and kept the stroke the same to get revier engines that still had good torque, even at it's biggest the bore only ever got to 3.166"(from memory again, might have been 3.186") which is still a long way from square.

I do love old engineering, there is always a story as to "why" and everything has a family tree. Incidentally the scaled up "A" series was simply called the "B" series, well what else would you call it? but in truth there were other differences it wasn't a pure scaling excercise, for example the water pump bypass concertina tube on an "A" series was replaced by a drilled gallery on the "B" series and the "A" series had "cranked" conrods the "B" series didn't, the "B" series even had the luxury of a proper cam chain tensioner(wow high tech) and then there is the better oil pump setup on a "B" series as well. If anything the modifications made to the "B" series made it a better unit than the legendary "A" series.

Best Regards
Rick


RE: Todays Project - What did you do today? - dallen - 11-30-2012

(11-30-2012, 09:37 AM)TomG Wrote: Nice looking spring Dallen. How did you do the closed ends? Did you wind it tight and then stretch it to length or use some other technique?

Tom

wrapped it tight then stretched it to open the coils as I need a compression spring. but its a little long for where it has to go so back to the chop saw to shorten it, made from 0.20 music wire


(11-30-2012, 09:42 AM)sasquatch Wrote: Nice Spring.

Thanks Sasquach